Black Rock Quarry Control Point. Check out our Control Threshold Find the Black Rock Quarry Walkthrough Part 25 to see how to make it to the Quarry through the rabbit warren of the building. NCS Power Plant Maintenance Levitate to the big tower in this area.
Now head to the centre of the quarry and take out the Hiss occupants. The locked door is connected to the room the Control Point is in. All it does is levitate towards you and harm you that way.
Claim the control point on your left.
The Black Rock Quarry section where you are looking for extra items is a bit confusing. Anyone know if this Control Point in Black Rock Quarry is accessible. Claim the control point on your left. Thomson will appear as soon as you try to move through the gate into the quarry.